Best Law Firms in the United States for Mass Tort Litigation / Class Actions - Defendants

More than 900 legal professionals in 26 offices across the country collaborate seamlessly at Barnes & Thornburg to field the right team for you. As one of the 100 largest law firms in the United States, we put our collective experience across legal disciplines to work so you can conduct business in today’s changing marketplace. For more information, visit us online at www.btlaw.com.

As a full-service business, litigation and real estate law firm based in Portland, Oregon, Dunn Carney attorneys are able to collaborate effectively and efficiently across practice areas to provide the best solutions possible. Attorneys at Dunn Carney deliver what is important to their clients: expert, coordinated, cost-effective services that are responsive to client needs. As one of Oregon’s largest law firms, we have the talent and resources to deal with the most complex legal problems, but a collegial, team-driven culture that emphasizes the accessibility and responsiveness usually associated with smaller firms.

We believe that consistent service is as important as the expertise provided. For more than 70 years Dunn Carney has provided exceptional legal services to businesses, not-for-profits and individuals throughout the Northwest and the nation. As the only Oregon member of Meritas, a worldwide network of peer- and client-reviewed firms, Dunn Carney has global reach but a local footprint. 

Fishman Haygood is a Louisiana-based litigation and transactional firm built for the matters that require it most — complex disputes, high-stakes transactions, and the intersection of both. With roughly 40 attorneys in New Orleans and Baton Rouge, the firm runs lean by design: direct partner involvement, precise judgment, and three decades of earning the trust of clients who need it done right.

We handle everything from commercial disputes, securities litigation, class actions, environmental, energy, and bankruptcy matters to M&A, real estate, and private equity deals for businesses, institutions, and individuals nationwide. Attorneys routinely try high-stakes cases to verdict, lead complicated chapter 11 restructurings, and close complex transactions. As a boutique firm, we're not smaller for the sake of scale, but intentionally structured to handle sophisticated, consequential work.

At Hahn Loeser, our people form the core of our firm. We have assembled a team of highly skilled attorneys and staff across the United States. Our focus on collaborative efforts and creative business solutions sets us apart. We prioritize the needs of our clients and our team members alike, emphasizing a supportive environment. The diverse backgrounds of our attorneys represent Hahn Loeser's enduring commitment to diversity. This has spurred a broad practice range and has helped us foster strong relationships within various community segments over the years. We strive to understand your business and personal goals to help you achieve them according to your specific needs.

Hahn Loeser's client-centered approach is facilitated by our dedicated team of attorneys and staff who operate across different practice areas and office locations nationwide, working together to devise innovative solutions for client challenges.

With more than 140 attorneys, we have established a national presence, expanding to eight strategic locations across the country, including Cleveland and Columbus, Ohio; Naples, Fort Myers, Tampa, and Sarasota, Florida; San Diego, California; and Chicago, Illinois. Founded in 1920, Hahn Loeser has grown to become one of the 500 largest law firms in the United States as recognized by The National Law Journal. We are equipped to manage complex litigation and transactions while offering our clients highly personalized service.

Harris Beach Murtha formed in 2025 via the combination of Harris Beach PLLC and Murtha Cullina LLP. A forward-thinking and innovative partnership with the benefit of more than 250 years of combined history, Harris Beach Murtha’s New York roots reach back to 1856, and the firm has had ties to New England since 1936. Harris Beach and Murtha Cullina were separately among the country’s top law firms as ranked by The National Law Journal.

Harris Beach Murtha and its subsidiaries have a strong Northeast presence, with a global reach, and represent clients locally, regionally and nationally. Clients include Fortune 100 corporations, privately held companies, emerging businesses, public sector entities, tax-exempt organizations and individuals. The firm’s practice areas and industries served span appellate law, business litigation, commercial real estate, construction, corporate, environmental, energy, financial institutions, financial restructuring, government compliance and investigations, health care, immigration, intellectual property, labor and employment, mass torts, medical and life sciences, political law, product liability, public finance, tax, and trusts and estates. 

Harris Beach Murtha is the exclusive member firm in Connecticut for Lex Mundi, the world’s leading network of independent firms with in-depth experience in more than 125 countries worldwide. As part of the Lex Mundi global network, Harris Beach Murtha can provide clients with preferred access to more than 22,000 lawyers around the world – all from a single point of contact. Lex Mundi allows Harris Beach Murtha to seamlessly handle clients’ most challenging cross-border transactions and disputes. 

The firm’s lawyers and consultants practice from offices throughout Connecticut in Bantam, Hartford, New Haven and Stamford; New York state in Albany, Binghamton, Buffalo, Ithaca, Niagara Falls, New York City, Rochester, Saratoga Springs, Syracuse, Long Island and White Plains, as well as in Boston, Massachusetts and Newark, New Jersey. For more information, visit www.harrisbeachmurtha.com.

Haynsworth Sinkler Boyd, P.A. brings innovative, effective, and practical solutions to the complex problems clients face in today’s interwoven and evolving arenas of law, commerce, technology, insurance, education, healthcare, government, and public relations.

Excellent, efficient legal service requires an in-depth knowledge of our clients’ businesses and the challenges they face in today’s increasingly competitive marketplace. With attorneys experienced in a full range of practice areas, Haynsworth Sinkler Boyd attorneys work as a member of our clients’ team, providing advice and counsel for a broad range of matters, including general operations, regulatory compliance, corporate organization and governance, mergers and acquisitions, securities, taxation, employment, and litigation.

Admissions include state and federal courts in South Carolina, North Carolina, District of Columbia, Georgia, Florida, New York, Ohio, Pennsylvania, Texas,  including the Federal District Court for the District of Columbia, the United States Court of Appeals for the Fourth Circuit, the United States Court of Appeals for the Fifth Circuit, the United States Court of Appeals for the Federal Circuit, and the United States Supreme Court. Backed by more than a century of commitment to the businesses it serves, the firm provides clients with the highest level of advice, counsel, and representation covering a diverse array of matters in regional, national, and international settings.

Distinguished in the legal community, firm attorneys have held leadership positions within state and national organizations such as past presidents of the South Carolina Bar, the South Carolina Bar Foundation, and the South Carolina Defense Trial Attorneys Association; including serving as board members of the American College of Bond Counsel and past president of the National Association of Bond Lawyers (NABL).

Haynsworth Sinkler Boyd, P.A. has more than 110 attorneys and offices located in Charleston, Columbia, Florence, and Greenville, South Carolina, and Raleigh, North Carolina.

Jones Walker LLP is among the largest 145 law firms in the United States. With offices in Alabama, Arizona, the District of Columbia, Florida, Georgia, Illinois, Kentucky, Louisiana, Minnesota, Mississippi, New York, and Texas, we serve local, regional, national, and international business interests. The firm is committed to providing a comprehensive range of legal services to major multinational public and private corporations, Fortune® 500 companies, money center banks, worldwide insurers, and emerging companies doing business in the United States and abroad.

Since 2012, The BTI Consulting Group has named Jones Walker to its Client Service A-Team, which identifies the top client service firms in the nation. The firm has previously been named to both the A-Team and BTI's Client Service 30, a list of top 30 firms in the country for dedication to client service. Clients have recognized Jones Walker for consistent excellence in areas such as client focus, anticipating the client's needs, and understanding the client's business.

Kazmarek Mowrey Cloud Laseter LLP (KMCL) is a top-tier environmental law firm serving public and private entities nationwide from offices in Atlanta, Birmingham, and Pittsburgh.  With seventeen highly credentialed lawyers dedicated to environmental law, we bring depth and decades of experience to address the needs of Fortune 500 companies, mid-sized businesses and industries, utilities, and state and local governments.

KMCL is a recognized source of compliance, litigation, and transactional expertise focused on the complex and evolving impact of environmental law on business.

Furthermore, we are among the East’s largest environmental practices, including those at the largest law firms focusing on corporate environmental law.  With that foundation, we provide unparalleled sophistication, expertise, and depth on challenging environmental issues at an unmatched value because our boutique platform enables our commitment to two core principles:

1. Surpass the expertise and dedication found in the largest and most sophisticated law firms, and
   
2. Understand our clients’ businesses in order to tailor our services in value-added ways and exceed expectations.

We routinely provide litigation, regulatory, transactional, and policy counselling to clients (a diverse range of Fortune 500 companies, utilities, mid-sized businesses and industries, and local governments) in the highest profile environmental matters, including:

• Representing the State of Georgia in the “water wars”, i.e., ongoing, multi-jurisdictional water supply-related litigation with the United States Army Corps of Engineers, the State of Alabama, and the State of Florida.
  
• Environmental counsel on matters nationwide for the leading producer of flat-rolled aluminium products and world’s largest aluminium recycler.
  
• Act as national environmental counsel to several large real estate portfolio purchasers, as well as to manufacturing clients on corporate transactions, litigation, and regulatory compliance.
  
• Prevailing for our clients’ primary interests before the U.S. Supreme Court in a case challenging a major component of EPA’s stationary source greenhouse gas regulatory program.
  
• Challenging numerous EPA rulemakings of national importance in the U.S. Court of Appeals for the D.C. Circuit, as well as in other venues—often prevailing.
  
• Counseling client on world’s largest planned carbon capture and sequestration project.

Rethink. Refine. Rediscover.

Kean Miller is home to more than 240 attorneys across Louisiana and Texas, providing legal support to the people and industries that drive the energy-belt economy. We work with Fortune 500 companies, national businesses, and local enterprises, delivering practical guidance and efficient legal services with a consistent focus on value and cost awareness. Whether in courtrooms or boardrooms, our attorneys develop thoughtful strategies designed to support our clients’ business goals.

Kean Miller is a trusted resource for clients in the energy and petrochemical sectors throughout the energy belt region. Our work spans upstream, midstream, and downstream operations, as well as the businesses and service providers that support these activities.

Over time, our practice has expanded to address a wide range of legal needs across industries such as maritime, construction, manufacturing, tax, hospitality, financial services, and healthcare. We assist businesses and individuals in navigating legal challenges with an approach focused on long-term stability and informed decision-making.

At Kean Miller, our attorneys are collaborative, accessible, and engaged with both clients and the communities we serve. A shared commitment to integrity, professionalism, and client-focused service has shaped our culture and continues to define the Kean Miller experience.

We are committed to being available when our clients need us. Through preparation and responsiveness, we aim to address issues promptly with clear strategies and practical solutions, even when matters arise unexpectedly.

Clients often point to the value Kean Miller brings as an important factor in their continued success. Our attorneys pair legal insight with business-minded thinking, remaining attentive to each client’s objectives and financial considerations.

We believe diverse teams contribute to sound judgment and effective problem-solving. Our inclusive culture draws professionals with a broad range of backgrounds and perspectives, resulting in one of the higher percentages of women attorneys and partners among large law firms, along with meaningful representation of minority attorneys.

Kean Miller is committed to building lasting relationships within the firm and with our clients. Through thoughtful recruitment, collaboration, and a strong internal culture, we work to ensure continuity of service and support for clients across generations.

McDermott Will & Schulte is an international law firm serving businesses, institutions and individuals across a wide range of legal matters. With offices throughout the United States and Europe, including Chicago, New York, London, Paris, Frankfurt and Washington, D.C., the firm advises clients on complex transactions, regulatory concerns, litigation and industry-specific challenges. Since first earning attorney recognition in 1983, the firm has continued to build a broad legal practice shaped by changing markets and evolving client needs.

The firm is known for its work in corporate law, mergers and acquisitions, banking and finance, tax law, health care law, intellectual property and high-stakes litigation. Its attorneys also counsel clients in emerging areas such as artificial intelligence law, fintech, privacy and data security, biotechnology and life sciences. McDermott Will & Schulte represents clients ranging from growing companies to multinational organizations, helping them navigate business decisions, disputes and regulatory matters with practical legal guidance.

McDermott Will & Schulte has earned recognition across numerous practice areas in Best Law Firms rankings, including bankruptcy and restructuring, employment law, real estate law, securities regulation, patent law, antitrust law and international trade and finance law. The firm also has 357 lawyers recognized by Best Lawyers, reflecting peer-reviewed acknowledgment across a broad range of legal disciplines.

Clients turn to McDermott Will & Schulte for counsel that is strategic, business-minded and tailored to the industries they serve. Whether handling cross-border transactions, intellectual property disputes, health care compliance or complex commercial litigation, the firm focuses on delivering clear legal solutions that align with each client’s long-term objectives.

While corporate, nonprofit, association and individual clients hire O’Hagan Meyer attorneys because of our broad and deep expertise, stellar reputation and outstanding track record in the courtroom, they rehire us primarily because of one key attribute: we tell it like it is. When a case or matter comes to us, we examine it thoroughly but quickly and if we and our client believe we should litigate, we’ll roll up our sleeves and fight to win. But if we determine that it’s in the client’s best interest to settle, we’ll say so, explain why and get rid of the problem as fast and efficiently as possible. We’re straight shooters, straight away.

We have offices staffed by nationally honored and well-regarded attorneys in all the major regions in the United States. With such geographic reach and depth, we use our experience and expertise to solve problems wherever they arise. Yet, because we operate in a low-overhead environment, we’re able to deliver top-shelf counsel at fair rates. We’re not profit-driven, we’re service-driven.

RMP LLP (“RMP”) is a limited liability partnership formed in 2005 to provide legal services in Northwest Arkansas. The region includes three Fortune 500 companies—Walmart, Tyson Foods, and J.B. Hunt Transport Services—as well as many other employers that support a diverse and expanding business environment. Our practice is shaped by the legal considerations that often arise alongside economic development. We place a strong emphasis on building and maintaining long-term client relationships. With more than fifty years of combined experience in taxation, transactional matters, and trust and estate planning, our attorneys offer practical perspective and careful analysis tailored to each client’s circumstances.

The firm’s vision is to serve individuals, families, and businesses throughout Northwest Arkansas by providing tax, transactional, and trust and estate planning services often found in larger metropolitan areas, while remaining accessible and attentive to the needs of our local community. RMP has grown over time and currently maintains offices in Bentonville, Arkansas, and Jonesboro, Arkansas.

A full service Southeastern-based law firm representing clients across the United States and internationally, Stites & Harbison PLLC is known as a preeminent firm managing sophisticated transactions, challenging litigation, and complex regulatory matters on a daily basis. The firm represents a broad spectrum of clients including multinational corporations, financial institutions, pharmaceutical companies, health care organizations, manufacturers, private companies, nonprofit organizations, family-owned businesses and individuals. Tracing its origins to 1832, Stites & Harbison is one of the oldest law practices in the nation.

The firm maintains 11 offices across six states--Georgia, Indiana, Kentucky, Ohio, Tennessee, and Virginia--and is able to service the needs of international clients with its memberships in Business Counsel, Inc. and Lex Mundi. Additionally, Stites & Harbison is a member of The Harmonie Group, the national network of top litigation law firms, and is the Kentucky representative to the prestigious Southern Law Network.

At Taft, we work together across offices and practice areas to help clients address legal and business challenges efficiently and strategically. Our attorneys focus on practical solutions designed to support clients’ goals, whether they are managing day-to-day operations, navigating complex transactions, or resolving disputes.

With more than 1,100 attorneys, Taft serves clients from offices in Chicago, Illinois; Cincinnati, Cleveland, Columbus, Dayton, and Delaware, Ohio; Aspen, Denver, and Colorado Springs, Colorado; Detroit and Southfield, Michigan; Minneapolis, Minnesota; Indianapolis, Indiana; Covington, Kentucky; Phoenix, Arizona; Stuart and West Palm Beach, Florida; and Washington, D.C.

Taft represents individuals, privately held businesses, public companies, nonprofits, and institutions across established and emerging industries throughout the United States and internationally.

The firm advises clients in a broad range of practice areas, including:

• Business
• Bankruptcy and Restructuring
• Employment and Labor Relations
• Energy
• Environmental
• Health Care
• Intellectual Property
• Lending and Finance
• Litigation
• Private Client
• Real Estate
• Tax

Since 1885, Taft has remained focused on delivering responsive legal counsel and client service tailored to the needs of businesses, organizations, and individuals.

Affiliated Businesses

Taft attorneys regularly collaborate with affiliated businesses to provide clients with additional consulting and advisory services in a variety of industries and operational areas. These affiliated businesses include:

• Ginovus
• Taft Advisors LLC
• Taft Business Consulting
• Taft Infrastructure Advisors

Through these organizations, clients have access to consulting services related to planning, forecasting, government relations, infrastructure, and public policy matters.

Awards and Honors

Taft and its attorneys have received recognition from legal industry publications and ranking organizations, including:

Main Areas of Practice:

Business: Taft represents public, private, and nonprofit clients in industries including banking, construction, finance, health care, insurance, manufacturing, private equity, real estate, retail, transportation, and utilities. The firm advises clients ranging from emerging businesses to Fortune 500 companies on local, national, and cross-border matters.

Bankruptcy and Restructuring: The firm represents debtors, lenders, creditors’ committees, trustees, suppliers, developers, landlords, buyers, sellers, and other parties in restructuring matters, insolvency proceedings, transactions, and related litigation across multiple industries.

Employment and Labor Relations: Taft advises employers on labor and employment matters, including workplace policies, litigation, labor relations, employee benefits and ERISA compliance, workplace safety, immigration matters, and workers’ compensation issues.

Energy: The firm represents energy providers, utilities, developers, independent power producers, transmission companies, and other participants in the energy sector on regulatory, transactional, and operational matters.

Environmental: Taft handles environmental litigation, regulatory compliance, enforcement matters, environmental due diligence, toxic tort claims, Superfund matters, Brownfields redevelopment, and administrative proceedings before state and federal agencies.

Health Care: The firm advises hospitals, physicians, health systems, research institutions, and medical device, biotechnology, and pharmaceutical companies on business, regulatory, reimbursement, litigation, employment, and compliance matters.

Intellectual Property: Taft counsels clients on patents, trademarks, copyrights, trade secrets, licensing, and intellectual property litigation, including matters involving pharmaceuticals, life sciences, software, and internet-related technologies.

Lending and Finance: The firm represents lenders and borrowers in a wide range of financing transactions, including asset-based lending, acquisition finance, mezzanine financing, real estate finance, equipment leasing, regulatory compliance, and consumer financial services matters.

Litigation: Taft represents clients in state and federal courts, arbitration proceedings, and regulatory matters involving commercial disputes, antitrust, bankruptcy, construction, environmental claims, intellectual property, securities, product liability, white collar defense, and other complex litigation matters.

Private Client: The firm advises individuals, families, and business owners on estate planning, wealth transfer strategies, succession planning, trusts and estates, charitable planning, and tax-related matters.

Real Estate: Taft represents clients in matters involving acquisitions, dispositions, financing, leasing, development, land use, construction, property management, and real estate litigation.

Tax: The firm advises corporations, financial institutions, nonprofit organizations, joint ventures, and individuals on tax planning, employee benefits, executive compensation, mergers and acquisitions, international tax matters, state and local taxation, and tax controversy matters.